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Manley NexTek Series Oval Track & Endurance Valve Springs


Manley
Manley NexTek Series Oval Track & Endurance Valve Springs

Product images may differ from actual product appearance.

NexTek Valve Springs...Better By Design!

Manley's NexTek valve springs are the latest in valve spring technology. The main benefit of the NexTek springs is that they resist degradation of spring pressure in the later stages of a race. This is critical in oval track racing, where an engines valve train is abused for a long period of time. The spring inside diameter is chamfered for retainer clearance. The state-of-the-art winding process, thermal treatment and finishing practices cannot be duplicated, making these springs unique. The specially processed premium-grade chrome silicon is virtually free of impurities or surface irregularities, making for a high-quality, high-performance valve spring. NexTek Series valve springs have been tested by leading engine builders and are confirmed to be the best performing valve springs on the market today!

Features:
  • No degradation of spring pressure in the later stages of a race
  • Manufactured from ''super clean'' HiTensile Chrome Silicon steel
  • Shotpeened to MIL Specs for maximum fatigue life
  • Proprietary multistep heat treating minimizes load loss
  • Tightly controlled open end flatness reduces valve stem side loading
  • Tip thickness designed to eliminate overload breakage
  • No degradation of spring pressure in the later stages of a race
  • Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities
  • NexTek Series valve springs have been tested by leading engine builders and are confirmed to be the best performing valve springs on the market today
  • These Manley NexTek valve springs are available in Polished and Super Finished versions to reduce friction, improve fatigue life and minimize load loss
  • Super Finished is multi-step surface enhancement that significantly improves fatigue strength

    Click Here to see Valve Springs Load Chart


  • 23 Products
    1.400'' O.D. Double Valve Springs
  • Super Finished

  • 660-221446SF-1
    Super Finished NexTek Oval Track/Endurance Valve Spring
  • 1.400'' O.D.
  • 0.700'' I.D.
  • 575 lbs./in. Spring Rate
  • 240 @ 2.050'' Installed
  • 700 @ 1.250'' Open
  • 0.800'' Max Valve Lift
  • 1.150'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • $42.99
    Order Today Ships 07/14/15

    660-221446SF-16
    Super Finished NexTek Oval Track/Endurance Valve Springs
  • 1.400'' O.D.
  • 0.700'' I.D.
  • 575 lbs./in. Spring Rate
  • 240 @ 2.050'' Installed
  • 700 @ 1.250'' Open
  • 0.800'' Max Valve Lift
  • 1.150'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
  • $679.99
    Order Today Ships 07/14/15
    1.530'' O.D. Double Valve Springs

    660-221432-1
    NexTek Oval Track/Endurance Valve Spring
  • 1.530'' O.D.
  • 0.750'' I.D.
  • 435 lbs./in. Spring Rate
  • 150 @ 1.900'' Installed
  • 425 @ 1.270'' Open
  • 0.630'' Max Valve Lift
  • 1.170'' Coil Bind
  • Double Spring with Damper
  • 1/pkg.
  • $27.99
    Order Today Ships 07/14/15

    660-221432-16
    NexTek Oval Track/Endurance Valve Springs
  • 1.530'' O.D.
  • 0.750'' I.D.
  • 435 lbs./in. Spring Rate
  • 150 @ 1.900'' Installed
  • 425 @ 1.270'' Open
  • 0.630'' Max Valve Lift
  • 1.170'' Coil Bind
  • Double Spring with Damper
  • 16/pkg.
  • $377.99
    Order Today Ships 07/14/15
    1.550'' O.D. Double Valve Springs
  • Super Finished

  • 660-221452SF-1
    Super Finished NexTek Oval Track/Endurance Valve Spring
  • 1.550'' O.D.
  • 0.800'' I.D.
  • 618 lbs./in. Spring Rate
  • 250 @ 2.025'' Installed
  • 750 @ 1.200'' Open
  • 0.825'' Max Valve Lift
  • 1.150'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • $41.99
    Order Today Ships 07/14/15

    660-221452SF-16
    Super Finished NexTek Oval Track/Endurance Valve Springs
  • 1.550'' O.D.
  • 0.800'' I.D.
  • 618 lbs./in. Spring Rate
  • 250 @ 2.025'' Installed
  • 750 @ 1.200'' Open
  • 0.825'' Max Valve Lift
  • 1.150'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
  • $666.99
    Order Today Ships 07/14/15
    1.560'' O.D. Double Valve Springs
  • Polished Finish

  • 660-221442-1
    Polished NexTek Oval Track/Endurance Valve Spring
  • 1.560'' O.D.
  • 0.812'' I.D.
  • 533 lbs./in. Spring Rate
  • 260 @ 2.000'' Installed
  • 660 @ 1.250'' Open
  • 0.750'' Max Valve Lift
  • 1.200'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • $33.99
    Order Today Ships 07/14/15

    660-221442-16
    Polished NexTek Oval Track/Endurance Valve Springs
  • 1.560'' O.D.
  • 0.812'' I.D.
  • 533 lbs./in. Spring Rate
  • 260 @ 2.000'' Installed
  • 660 @ 1.250'' Open
  • 0.750'' Max Valve Lift
  • 1.200'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
  • $462.99
    Order Today Ships 07/14/15
    1.570'' O.D. Double Valve Springs

    660-221440-1
    NexTek Oval Track/Endurance Valve Spring
  • 1.570'' O.D.
  • 0.760'' I.D.
  • 534 lbs./in. Spring Rate
  • 255 @ 2.000'' Installed
  • 630 @ 1.300'' Open
  • 0.700'' Max Valve Lift
  • 1.190'' Coil Bind
  • Double Spring with Damper
  • 1/pkg.
  • $31.99
    Order Today Ships 07/14/15
    1.570'' O.D. Double Valve Springs
  • Polished Finish

  • 660-221440P-1
    Polished NexTek Oval Track/Endurance Valve Spring
  • 1.570'' O.D.
  • 0.760'' I.D.
  • 534 lbs./in. Spring Rate
  • 255 @ 2.000'' Installed
  • 630 @ 1.300'' Open
  • 0.700'' Max Valve Lift
  • 1.190'' Coil Bind
  • Double Spring with Damper
  • 1/pkg.
  • $33.99
    Order Today Ships 07/14/15

    660-221440P-16
    Polished NexTek Oval Track/Endurance Valve Springs
  • 1.570'' O.D.
  • 0.760'' I.D.
  • 534 lbs./in. Spring Rate
  • 255 @ 2.000'' Installed
  • 630 @ 1.300'' Open
  • 0.700'' Max Valve Lift
  • 1.190'' Coil Bind
  • Double Spring with Damper
  • 16/pkg.
  • $454.99
    Order Today Ships 07/14/15

    660-221441P-1
    Polished NexTek Oval Track/Endurance Valve Spring
  • 1.570'' O.D.
  • 0.750'' I.D.
  • 575 lbs./in. Spring Rate
  • 280 @ 2.030'' Installed
  • 700 @ 1.300'' Open
  • 0.730'' Max Valve Lift
  • 1.215'' Coil Bind
  • Double Spring with Damper
  • 1/pkg.
  • $33.99
    Order Today Ships 07/14/15

    660-221441P-16
    Polished NexTek Oval Track/Endurance Valve Springs
  • 1.570'' O.D.
  • 0.750'' I.D.
  • 575 lbs./in. Spring Rate
  • 280 @ 2.030'' Installed
  • 700 @ 1.300'' Open
  • 0.730'' Max Valve Lift
  • 1.215'' Coil Bind
  • Double Spring with Damper
  • 16/pkg.
  • $485.99
    Order Today Ships 07/14/15
    1.580'' O.D. Double Valve Springs

    660-221443-1
    NexTek Oval Track/Endurance Valve Spring
  • 1.580'' O.D.
  • 0.832'' I.D.
  • 535 lbs./in. Spring Rate
  • 235 @ 1.950'' Installed
  • 610 @ 1.250'' Open
  • 0.730'' Max Valve Lift
  • 1.170'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • $31.99
    Order Today Ships 07/14/15

    660-221443-16
    NexTek Oval Track/Endurance Valve Springs
  • 1.580'' O.D.
  • 0.832'' I.D.
  • 535 lbs./in. Spring Rate
  • 235 @ 1.950'' Installed
  • 610 @ 1.250'' Open
  • 0.730'' Max Valve Lift
  • 1.170'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
  • $415.99
    Order Today Ships 07/14/15
    1.580'' O.D. Double Valve Springs
  • Polished Finish

  • 660-221443P-1
    Polished NexTek Oval Track/Endurance Valve Spring
  • 1.580'' O.D.
  • 0.832'' I.D.
  • 535 lbs./in. Spring Rate
  • 235 @ 1.950'' Installed
  • 610 @ 1.250'' Open
  • 0.730'' Max Valve Lift
  • 1.170'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • $43.99
    Order Today Ships 07/14/15

    660-221443P-16
    Polished NexTek Oval Track/Endurance Valve Springs
  • 1.580'' O.D.
  • 0.832'' I.D.
  • 535 lbs./in. Spring Rate
  • 235 @ 1.950'' Installed
  • 610 @ 1.250'' Open
  • 0.730'' Max Valve Lift
  • 1.170'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
  • $632.99
    Order Today Ships 07/14/15
    1.610'' O.D. Double Valve Springs

    660-221444-1
    NexTek Oval Track/Endurance Valve Spring
  • 1.610'' O.D.
  • 0.842'' I.D.
  • 546 lbs./in. Spring Rate
  • 235 @ 2.050'' Installed
  • 645 @ 1.300'' Open
  • 0.750'' Max Valve Lift
  • 1.220'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • $31.99
    Order Today Ships 07/14/15

    660-221444-16
    NexTek Oval Track/Endurance Valve Springs
  • 1.610'' O.D.
  • 0.842'' I.D.
  • 546 lbs./in. Spring Rate
  • 235 @ 2.050'' Installed
  • 645 @ 1.300'' Open
  • 0.750'' Max Valve Lift
  • 1.220'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
  • $415.99
    Order Today Ships 07/14/15
    1.610'' O.D. Double Valve Springs
  • Polished Finish

  • 660-221444P-1
    Polished NexTek Oval Track/Endurance Valve Spring
  • 1.610'' O.D.
  • 0.842'' I.D.
  • 546 lbs./in. Spring Rate
  • 235 @ 2.050'' Installed
  • 645 @ 1.300'' Open
  • 0.750'' Max Valve Lift
  • 1.220'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • $43.99
    Order Today Ships 07/14/15

    660-221444P-16
    Polished NexTek Oval Track/Endurance Valve Springs
  • 1.610'' O.D.
  • 0.842'' I.D.
  • 546 lbs./in. Spring Rate
  • 235 @ 2.050'' Installed
  • 645 @ 1.300'' Open
  • 0.750'' Max Valve Lift
  • 1.220'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
  • $632.99
    Order Today Ships 07/14/15
    1.620'' O.D. Double Valve Springs
  • Polished Finish

  • 660-221445P-1
    Polished NexTek Oval Track/Endurance Valve Spring
  • 1.620'' O.D.
  • 0.852'' I.D.
  • 500 lbs./in. Spring Rate
  • 280 @ 2.050'' Installed
  • 680 @ 1.250'' Open
  • 0.800'' Max Valve Lift
  • 1.200'' Coil Bind
  • Double Spring (No Damper)
  • 1/pkg.
  • $33.99
    Order Today Ships 07/14/15

    660-221445P-16
    Polished NexTek Oval Track/Endurance Valve Springs
  • 1.620'' O.D.
  • 0.852'' I.D.
  • 500 lbs./in. Spring Rate
  • 280 @ 2.050'' Installed
  • 680 @ 1.250'' Open
  • 0.800'' Max Valve Lift
  • 1.200'' Coil Bind
  • Double Spring (No Damper)
  • 16/pkg.
  • $463.99
    Order Today Ships 07/14/15

    23 Products